Quasit can remain hidden even when entering and passing through some wilderness rooms. I don't know if this is true for the other familiars that can hide and have autosneak but this is what happens with my quasit.

For example:

<100%hp 100%m 100%mv 6162tnl (2.19%) 5 AM civilized indoor> You tell your familiar to 'hide'. >> You attempt to hide. <100%hp 100%m 100%mv 6162tnl (2.19%) 5 AM civilized indoor> You tell your familiar to 'south'. >> Silverwood >> >> >> <100%hp 100%m 100%mv 6162tnl (2.19%) 5 AM civilized indoor> You tell your familiar to 'south'. >> Silverwood >> >> >> <100%hp 100%m 100%mv 6162tnl (2.19%) 5 AM civilized indoor> You tell your familiar to 'hide'. >> These shadows are too uncivilized for you to hide in. Yet when I go to the room the quasit is in: Silverwood (Invis) (Hide) A ghastly little quasit skulks here, hissing to itself.

n/t

The shadowcat used to be the same way, and I remember that got bugboarded, and changed so that the shadowcat can only be hidden in standard civilized areas.

n/t